package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import com.netflix.ribbon.proxy.annotation.Http;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * @author tianxinyu
 * @create 2020-12-17 20:29
 */
@Controller
public class LoginController {
    @Autowired
    ThirdPartFeignService thirdPartFeignService;
    @Autowired
    StringRedisTemplate redisTemplate;
    @Autowired
    MemberFeignService memberFeignService;

    @GetMapping("/login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(AuthServerConstant.LONGIN_USER);
        if(attribute == null){
            //没登录
            return "login";
        }else{
            return "redirect:http://gulimall.com";
        }
    }



    /**
     * 发送一个请求直接跳转到一个页面
     */
    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone")  String phone){
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if(!StringUtils.isEmpty(redisCode)){

            long l = Long.parseLong(redisCode.split("_")[1]);
            if(System.currentTimeMillis() - l <60000){
                //60秒内不能再发
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(),BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }


        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code + "_" + System.currentTimeMillis();
        //设置10分钟或过期
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,substring,10,TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone,code);
        return R.ok();
    }

    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result,
                         Model model,
                         RedirectAttributes redirectAttributes,
                         HttpSession session){

        if(result.hasErrors()){
            /**
             * map
             */
            Map<String,String> errors =result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField,FieldError::getDefaultMessage));
            redirectAttributes.addFlashAttribute("errors",errors);
            //Request method 'POST' not supported
            //用户注册 -> regist[post]--> 转发 /reg.html  路径映射默认都是get方式访问的
            //检查出错，返回注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        // 校验验证码
        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if(!StringUtils.isEmpty(s)){
            if(code.equals(s.split("_")[0])){
                //删除验证码 令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX+vo.getPhone());
                //验证码通过， 真正验证。 调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if(r.getCode() == 0){

                    //成功
                    return "redirect:/login.html";

                }else{
                    Map<String,String> errors = new HashMap<>();
                    errors.put("msg",r.getData(new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            }else{
                Map<String,String> errors = new HashMap<>();
                errors.put(code,"验证码错误");
                redirectAttributes.addFlashAttribute("errors",errors);
                return "redirect:http:auth.gulimall.com/reg.html";
            }
        }else{
            Map<String,String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            redirectAttributes.addFlashAttribute("errors",errors);
            //检验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";
        }


    }

    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes,
                        HttpSession session){

        //远程登录
        R login = memberFeignService.login(vo);
        if(login.getCode() == 0){
            //成功
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LONGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else{
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",login.getData("",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }





}
